Question

Please help me. I dont understand.

Answer 1

$\bf -3\frac{1}{8}+\left( -2\frac{1}{2} \right)\implies -3\frac{1}{8}+1\times \left( -2\frac{1}{2} \right)\implies -3\frac{1}{8}-2\frac{1}{2}$

Answer 2

subtracting a number is the same as adding the opposite of the number

for example:

7 - 6 = 1

7 + (-6) = 1

since you are subtracting 2$\frac{1}{2}$, it is the same as adding -2$\frac{1}{2}$

so your answer should be

A) -3$\frac{1}{8}$ + (-2$\frac{1}{2}$ )

hope this helped!